A TIFF colour test chart (with an embedded sRGB profile) was created using the exact colours listed in https://en.wikipedia.org/wiki/ColorCh.... The colours so created were then verified (via the Color Picker tool) in the Paint.net Windows utility program.

I noticed inconsistent colour display in the LR6 Develop module. For example, compare the colours between the Navigator and Preview windows in the attached screenshot. A similar discrepancy is noticed when displaying the image in fullscreen mode. To my eyes, the preview image is over-saturated as well as colour-shifted.